diff --git a/data/sql/updates/pending_db_world/rev_1634407932513021400.sql b/data/sql/updates/pending_db_world/rev_1634407932513021400.sql
new file mode 100644
index 000000000..79bcca89f
--- /dev/null
+++ b/data/sql/updates/pending_db_world/rev_1634407932513021400.sql
@@ -0,0 +1,4 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1634407932513021400');
+
+UPDATE `creature_template` SET `AIName` = '', `ScriptName` = 'boss_baroness_anastari' WHERE `entry` = 10436;
+DELETE FROM `smart_scripts` WHERE `entryorguid` = 10436 AND `source_type` = 0;
diff --git a/src/server/scripts/EasternKingdoms/Stratholme/boss_baroness_anastari.cpp b/src/server/scripts/EasternKingdoms/Stratholme/boss_baroness_anastari.cpp
new file mode 100644
index 000000000..3bf8dd0ca
--- /dev/null
+++ b/src/server/scripts/EasternKingdoms/Stratholme/boss_baroness_anastari.cpp
@@ -0,0 +1,150 @@
+/*
+ * This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by the
+ * Free Software Foundation; either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "InstanceScript.h"
+#include "ObjectAccessor.h"
+#include "Player.h"
+#include "ScriptMgr.h"
+#include "ScriptedCreature.h"
+#include "stratholme.h"
+#include "TaskScheduler.h"
+
+enum Spells
+{
+    SPELL_BANSHEEWAIL           = 16565,
+    SPELL_BANSHEECURSE          = 16867,
+    SPELL_SILENCE               = 18327,
+    SPELL_POSSESS               = 17244,    // the charm on player
+    SPELL_POSSESSED             = 17246,    // the damage debuff on player
+    SPELL_POSSESS_INV           = 17250     // baroness becomes invisible while possessing a target
+};
+
+class boss_baroness_anastari : public CreatureScript
+{
+public:
+    boss_baroness_anastari() : CreatureScript("boss_baroness_anastari") { }
+
+    struct boss_baroness_anastariAI : public BossAI
+    {
+        boss_baroness_anastariAI(Creature* creature) : BossAI(creature, TYPE_ZIGGURAT1)
+        {
+        }
+
+        void Reset() override
+        {
+            _possessedTargetGuid.Clear();
+
+            instance->DoRemoveAurasDueToSpellOnPlayers(SPELL_POSSESS);
+            instance->DoRemoveAurasDueToSpellOnPlayers(SPELL_POSSESSED);
+            me->RemoveAurasDueToSpell(SPELL_POSSESS_INV);
+
+            _scheduler.CancelAll();
+
+            _scheduler.SetValidator([this]
+            {
+                return !me->HasUnitState(UNIT_STATE_CASTING);
+            });
+        }
+
+        void EnterCombat(Unit* /*who*/) override
+        {
+            _scheduler.Schedule(1s, [this](TaskContext context){
+                DoCastVictim(SPELL_BANSHEEWAIL);
+                context.Repeat(4s);
+            })
+            .Schedule(11s, [this](TaskContext context){
+                DoCastVictim(SPELL_BANSHEECURSE);
+                context.Repeat(18s);
+            })
+            .Schedule(13s, [this](TaskContext context){
+                DoCastVictim(SPELL_SILENCE);
+                context.Repeat(13s);
+            });
+
+            SchedulePossession();
+        }
+
+        void JustDied(Unit* /*killer*/) override
+        {
+            instance->SetData(TYPE_ZIGGURAT1, IN_PROGRESS);
+        }
+
+        void SchedulePossession()
+        {
+            _scheduler.Schedule(20s, 30s, [this](TaskContext context){
+                if (Unit* possessTarget = SelectTarget(SELECT_TARGET_RANDOM, 1, 0, true, false))
+                {
+                    DoCast(possessTarget, SPELL_POSSESS, true);
+                    DoCast(possessTarget, SPELL_POSSESSED, true);
+                    DoCastSelf(SPELL_POSSESS_INV, true);
+                    _possessedTargetGuid = possessTarget->GetGUID();
+
+                    // We must keep track of the possessed player, the aura falls off when their health drops below 50%.
+                    // The encounter resumes when the aura falls off.
+                    _scheduler.Schedule(1s, [this](TaskContext possessionContext) {
+                        if (Player* possessedTarget = ObjectAccessor::GetPlayer(*me, _possessedTargetGuid))
+                        {
+                            if (!possessedTarget->HasAura(SPELL_POSSESSED) || possessedTarget->HealthBelowPct(50))
+                            {
+                                possessedTarget->RemoveAurasDueToSpell(SPELL_POSSESS);
+                                possessedTarget->RemoveAurasDueToSpell(SPELL_POSSESSED);
+                                me->RemoveAurasDueToSpell(SPELL_POSSESS_INV);
+                                _possessedTargetGuid.Clear();
+                                SchedulePossession();
+                            }
+                            else
+                            {
+                                possessionContext.Repeat(1s);
+                            }
+                        }
+                    });
+                }
+                else
+                {
+                    // No valid possession targets found, retry.
+                    context.Repeat(1s);
+                }
+            });
+        }
+
+        void UpdateAI(uint32 diff) override
+        {
+            if (!UpdateVictim())
+            {
+                return;
+            }
+
+            _scheduler.Update(diff,
+                std::bind(&ScriptedAI::DoMeleeAttackIfReady, this));
+        }
+
+    private:
+        ObjectGuid _possessedTargetGuid;
+        TaskScheduler _scheduler;
+    };
+
+    CreatureAI* GetAI(Creature* creature) const override
+    {
+        return GetStratholmeAI<boss_baroness_anastariAI>(creature);
+    }
+};
+
+void AddSC_boss_baroness_anastari()
+{
+    new boss_baroness_anastari;
+}
+
diff --git a/src/server/scripts/EasternKingdoms/Stratholme/stratholme.h b/src/server/scripts/EasternKingdoms/Stratholme/stratholme.h
index 45b3c9141..1f94dc2ce 100644
--- a/src/server/scripts/EasternKingdoms/Stratholme/stratholme.h
+++ b/src/server/scripts/EasternKingdoms/Stratholme/stratholme.h
@@ -20,6 +20,8 @@
 
 #include "SpellAuras.h"
 
+#define StratholmeScriptName "instance_stratholme"
+
 enum DataTypes
 {
     TYPE_BARON_RUN                      = 0,
@@ -90,4 +92,10 @@ enum MiscIds
     SPELL_BARON_ULTIMATUM               = 27861
 };
 
+template <class AI, class T>
+inline AI* GetStratholmeAI(T* obj)
+{
+    return GetInstanceAI<AI>(obj, StratholmeScriptName);
+}
+
 #endif
diff --git a/src/server/scripts/EasternKingdoms/eastern_kingdoms_script_loader.cpp b/src/server/scripts/EasternKingdoms/eastern_kingdoms_script_loader.cpp
index 454a38210..ec28339bc 100644
--- a/src/server/scripts/EasternKingdoms/eastern_kingdoms_script_loader.cpp
+++ b/src/server/scripts/EasternKingdoms/eastern_kingdoms_script_loader.cpp
@@ -93,6 +93,7 @@ void AddSC_instance_scarlet_monastery();     //Scarlet Monastery
 void AddSC_boss_kirtonos_the_herald();
 void AddSC_instance_scholomance();           //Scholomance
 void AddSC_instance_shadowfang_keep();       //Shadowfang keep
+void AddSC_boss_baroness_anastari();
 void AddSC_instance_stratholme();            //Stratholme
 void AddSC_instance_sunken_temple();         //Sunken Temple
 void AddSC_instance_sunwell_plateau();       //Sunwell Plateau
@@ -227,6 +228,7 @@ void AddEasternKingdomsScripts()
     AddSC_boss_kirtonos_the_herald();
     AddSC_instance_scholomance();           //Scholomance
     AddSC_instance_shadowfang_keep();       //Shadowfang keep
+    AddSC_boss_baroness_anastari();
     AddSC_instance_stratholme();            //Stratholme
     AddSC_instance_sunken_temple();         //Sunken Temple
     AddSC_instance_sunwell_plateau();       //Sunwell Plateau